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Fix PR1645 by resolving forward alias references.

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llvm-svn: 41815
This commit is contained in:
Chris Lattner 2007-09-10 23:23:53 +00:00
parent e017870ae6
commit c94e3e9361
2 changed files with 30 additions and 0 deletions
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21
lib/AsmParser/llvmAsmParser.y
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@ -2129,6 +2129,27 @@ Definition
CurModule.CurrentModule); CurModule.CurrentModule);
GA->setVisibility($2); GA->setVisibility($2);
InsertValue(GA, CurModule.Values); InsertValue(GA, CurModule.Values);
// If there was a forward reference of this alias, resolve it now.
ValID ID;
if (!Name.empty())
ID = ValID::createGlobalName(Name);
else
ID = ValID::createGlobalID(CurModule.Values.size()-1);
if (GlobalValue *FWGV =
CurModule.GetForwardRefForGlobal(GA->getType(), ID)) {
// Replace uses of the fwdref with the actual alias.
FWGV->replaceAllUsesWith(GA);
if (GlobalVariable *GV = dyn_cast<GlobalVariable>(FWGV))
GV->eraseFromParent();
else
cast<Function>(FWGV)->eraseFromParent();
}
ID.destroy();
CHECK_FOR_ERROR CHECK_FOR_ERROR
} }
| TARGET TargetDefinition { | TARGET TargetDefinition {

9
test/Assembler/2007-09-10-AliasFwdRef.ll Normal file
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@ -0,0 +1,9 @@
; RUN: llvm-as < %s | llvm-dis
; PR1645
@__gthread_active_ptr.5335 = internal constant i8* bitcast (i32 (i32)* @__gthrw_pthread_cancel to i8*)
@__gthrw_pthread_cancel = alias weak i32 (i32)* @pthread_cancel
declare extern_weak i32 @pthread_cancel(i32)